Journal
TETRAHEDRON
Volume 60, Issue 10, Pages 2393-2408Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2003.12.065
Keywords
arylation; ketones; palladium and compounds
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The palladium-catalyzed regioselective alpha-monoarylation of deoxybenzoins and alpha,alpha-diarylation of acetophenones provides general, efficient access to 1,2,2-triarylethanones. After a comprehensive search for suitable experimental conditions to optimize such transformations, both reactions are alternatively conducted by means of either commercially available polymer-anchored catalysts or a very simple homogeneous catalytic system, thus avoiding the use of complex ligands. In addition, the synthesis of deoxybenzoins employing polymer-supported fibrous palladium catalysts is reported for the first time, and the excellent catalyst recycling properties suggest applicability to industrial purposes. (C) 2004 Elsevier Ltd. All rights reserved.
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